US5329065A - Electrical cable - Google Patents

Electrical cable Download PDF

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Publication number
US5329065A
US5329065A US07/962,809 US96280992A US5329065A US 5329065 A US5329065 A US 5329065A US 96280992 A US96280992 A US 96280992A US 5329065 A US5329065 A US 5329065A
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United States
Prior art keywords
cable
core
cables
sheath
outer sheath
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
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US07/962,809
Inventor
Derek Marney
David Hardy
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Litetronics UK Ltd
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Litetronics UK Ltd
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Assigned to LITETRONICS LIMITED reassignment LITETRONICS LIMITED ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HARDY, DAVID, MARNEY, DEREK D.
Assigned to LITETRONICS (U.K.) LTD. reassignment LITETRONICS (U.K.) LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LITETRONICS (U.K.) LTD.
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables

Definitions

  • the present invention relates to an electrical cable or flex and in particular to a high voltage electrical cable.
  • the cable or flex used In the supply of electricity to certain electrical devices it is often necessary for the cable or flex used to withstand an initial high electrical voltage which is used to commence operation of the device, which thereafter runs on a standard mains voltage. For example, in order to strike a mercury vapour lamp or other similar lighting means, it is necessary to supply an initial voltage of approximately 4,500 volts. If a standard 3-core 13 amp electrical cable is used to supply this voltage, the cable can cope initially but quickly becomes burnt out with repeated use. There is also a significantly increased risk of fire.
  • a heavy gauge single core insulated cable is often used as the live wire of the electrical supply along with separate standard single core neutral and earth wires.
  • these three wires are often pulled into a hollow sheath or tubular casing by the electrician so that the resulting single flex can be threaded, as appropriate, down a conduit between the electrical supply and the location of the device.
  • the sheathing of the three separate wires in the outer casing is often difficult to accomplish satisfactorily as the casing tends to twist and wrinkle.
  • the object of the present invention is to overcome or substantially mitigate the aforementioned problems.
  • a multi-core electrical cable comprising a moulded-on outer sheath, at least two separately insulated inner core cables and a separately insulated earth cable and characterised in that at least one of the inner core cables has a high tension conducting core with an overall cross-sectional area of at least 1 mm 2 and an insulating sheath which is approximately 1.8 mm thick, and in that the earth cable has a conducting core with an overall cross-sectional area of at least 1 mm 2 and an insulating sheath which is approximately 0.65 mm thick.
  • the high tension conducting core comprises a bundle of at least 32 strands of 0.2 mm diameter tinned copper wire.
  • the moulded-on outer sheath of the multi-core cable totally encapsulates the inner core cables and the earth cable to a depth of at least 1.3 mm.
  • the inner core cables and the earth cable are twisted together within the moulded-on outer sheath and bound by a spirally wound tape.
  • FIGS. 1 and 1a are side and end views respectively of a high tension core cable for incorporation into a multi-core cable according to the invention
  • FIGS. 2 and 2a are side and end views respectively of an earth safety core cable for incorporation into a multi-core cable according to the invention
  • FIGS. 3 and 4 are side views of three core cables forming part of a multi-core cable according to the invention at two stages respectively during its manufacture;
  • FIG. 5 is a side view of a multi-core cable according to the invention with part of its outer sheath cut away to reveal the core cables;
  • FIG. 6 is a transverse cross-sectional view of the cable shown in FIG. 5.
  • the multi-core cable of the present invention comprises at least one inner core cable 1, as shown in FIG. 1 and 1a, which is capable of withstanding a high voltage, preferably of at least 4,500 volts.
  • This cable 1 comprises an insulating sheath 2 encapsulating an inner conducting core 3 which is made up of a bundle of individual wires 4.
  • each wire 4 is a tinned copper wire of approximately 0.2 mm diameter so that the overall cross-sectional area of the conducting core 3 is approximately 1 mm 2 .
  • the insulating sheath 2 encapsulates the core 3 to a depth "a" of at least 1.8 mm as shown in FIG. 1a and is preferably made from a PVC compound which complies with British Standard BS6746.
  • a PVC compound which complies with British Standard BS6746.
  • any other suitable insulating material could be used, such as for example silicone or rubber, provided that it can withstand a high electrical voltage.
  • the depth of the encapsulation of the core 3 by the sheath 2 may be different according to the material used.
  • FIGS. 2 and 2a show a safety earth cable 5 for incorporation in a multi-core cable according to the invention and comprising a high tension core cable as shown in FIGS. 1 and 1a.
  • the cable 5 again comprises an insulating sheath 6 encapsulating an inner conducting core 7.
  • the core 7 of the cable 5 is made from a bundle of individual wires 8 and again these comprise 32 tinned copper conducting wires of 0.2 mm diameter.
  • the depth of the insulating sheath 6 encapsulating the core 7 need not be so great as that for the cable 1 as the earth cable 5 is intended to withstand a high voltage only in exceptional circumstances.
  • the sheath 6 has a depth "b" of 0.65 mm surrounding the core 7 and it is made from the same PVC material as the sheath 2.
  • a multi-core cable according to the invention suitable for use in supplying an electrical current to a mercury vapour lamp or similar where it will have to withstand an initial voltage of the order of 4,500 volts preferably comprises three cores, as in a standard electrical cable or flex, but with the live and neutral core cables being high tension cores of the kind described above with reference to FIGS. 1 and 1a and the safety earth core cable being of the kind described with reference to FIGS. 2 and 2a.
  • the construction of such a cable will now be described with reference to FIGS. 3 to 6.
  • the high tension live and neutral cables 9 and 10 respectively and an earth cable 11 are individually manufactured in known manner to the specifications previously described and they are then lightly twisted together as shown in FIG. 3.
  • the insulating sheath of each is individually coloured in line with International Standards.
  • the bundle of cables 9, 10, 11 is secured by the application of tape 12, which is wound spirally around the bundle of twisted cables 9, 10, 11.
  • the tape 12 is clear so that the colours of the sheaths of the cables 9, 10 and 11 can be seen if the finished multi-core cable 13, as shown in FIGS. 5 and 6, is cut into. Additionally, the tape 12 is also made from an electrically insulating and heat resisting material.
  • the taped and twisted cables 9, 10 and 11 are completely enclosed in known manner in a moulded-on sheath 14 which can be made of a similar PVC compound as that of the individual sheaths comprising the cables 9, 10, 11.
  • the sheath 14 encapsulates the twisted bundle of cables 9, 10, 11 to a depth "c" of at least 1.3 mm and also insulates each of the cables from one another so that the finished structure of the cable 13, as shown in FIG. 6, is solid.
  • the overall diameter "d" of the cable 13 is of the order of 12.5 mm.
  • Such a multi-core cable 13 is suitable for use in many situations and particularly in lighting installations where a high voltage of up to 4,500 volts has to applied to an electrical device.
  • a high voltage of up to 4,500 volts has to applied to an electrical device.
  • many different configurations of cable are possible depending on their intended use. Cables with 1, 2, 3, 5 and more inner high tension inner core cables are all possible and can be manufactured in a similar way to that described above for use in a variety of applications where high voltages must be withstood.

Abstract

A multi-core electrical cable for use in the supply of electricity to certain electrical devices such as vapor lamps and the like comprises a molded-on outer sheath and at least two separately insulated inner core cables. At least one of the core cables has a high tension conducting core with an overall cross-sectional area of at least 1 mm square. Preferably, the high tension conducting core comprises a bundle of at least 32 strands of 0.2 mm diameter tinned copper wire with an insulating sheath which is at least 1.8 mm thick. The molded-on outer sheath of the multi-core cable preferably totally encapsulates the inner cables to a depth of at least 1.3 mm.

Description

TECHNICAL FIELD
The present invention relates to an electrical cable or flex and in particular to a high voltage electrical cable.
BACKGROUND ART
In the supply of electricity to certain electrical devices it is often necessary for the cable or flex used to withstand an initial high electrical voltage which is used to commence operation of the device, which thereafter runs on a standard mains voltage. For example, in order to strike a mercury vapour lamp or other similar lighting means, it is necessary to supply an initial voltage of approximately 4,500 volts. If a standard 3-core 13 amp electrical cable is used to supply this voltage, the cable can cope initially but quickly becomes burnt out with repeated use. There is also a significantly increased risk of fire.
To overcome the problem of supplying an initial high voltage to devices, such as lamps, which then run on a standard mains voltage, a heavy gauge single core insulated cable is often used as the live wire of the electrical supply along with separate standard single core neutral and earth wires. When wiring such a device to a mains electric supply these three wires are often pulled into a hollow sheath or tubular casing by the electrician so that the resulting single flex can be threaded, as appropriate, down a conduit between the electrical supply and the location of the device. However, it will be appreciated that this considerably increases the work required by the electrician as compared with the wiring of a device capable of being supplied by a standard 3-core cable. In addition, the sheathing of the three separate wires in the outer casing is often difficult to accomplish satisfactorily as the casing tends to twist and wrinkle.
The object of the present invention is to overcome or substantially mitigate the aforementioned problems.
SUMMARY OF THE INVENTION
According to the present invention there is provided a multi-core electrical cable comprising a moulded-on outer sheath, at least two separately insulated inner core cables and a separately insulated earth cable and characterised in that at least one of the inner core cables has a high tension conducting core with an overall cross-sectional area of at least 1 mm2 and an insulating sheath which is approximately 1.8 mm thick, and in that the earth cable has a conducting core with an overall cross-sectional area of at least 1 mm2 and an insulating sheath which is approximately 0.65 mm thick.
Preferably, the high tension conducting core comprises a bundle of at least 32 strands of 0.2 mm diameter tinned copper wire.
Preferably also, the moulded-on outer sheath of the multi-core cable totally encapsulates the inner core cables and the earth cable to a depth of at least 1.3 mm.
Preferably also, the inner core cables and the earth cable are twisted together within the moulded-on outer sheath and bound by a spirally wound tape.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will now be described by way of example with reference to the accompanying drawing, in which:
FIGS. 1 and 1a are side and end views respectively of a high tension core cable for incorporation into a multi-core cable according to the invention;
FIGS. 2 and 2a are side and end views respectively of an earth safety core cable for incorporation into a multi-core cable according to the invention;
FIGS. 3 and 4 are side views of three core cables forming part of a multi-core cable according to the invention at two stages respectively during its manufacture;
FIG. 5 is a side view of a multi-core cable according to the invention with part of its outer sheath cut away to reveal the core cables; and
FIG. 6 is a transverse cross-sectional view of the cable shown in FIG. 5.
DETAILED DESCRIPTION OF THE INVENTION
The multi-core cable of the present invention comprises at least one inner core cable 1, as shown in FIG. 1 and 1a, which is capable of withstanding a high voltage, preferably of at least 4,500 volts.
This cable 1 comprises an insulating sheath 2 encapsulating an inner conducting core 3 which is made up of a bundle of individual wires 4. Preferably, each wire 4 is a tinned copper wire of approximately 0.2 mm diameter so that the overall cross-sectional area of the conducting core 3 is approximately 1 mm2.
The insulating sheath 2 encapsulates the core 3 to a depth "a" of at least 1.8 mm as shown in FIG. 1a and is preferably made from a PVC compound which complies with British Standard BS6746. However, any other suitable insulating material could be used, such as for example silicone or rubber, provided that it can withstand a high electrical voltage. In this case, the depth of the encapsulation of the core 3 by the sheath 2 may be different according to the material used.
FIGS. 2 and 2a show a safety earth cable 5 for incorporation in a multi-core cable according to the invention and comprising a high tension core cable as shown in FIGS. 1 and 1a. The cable 5 again comprises an insulating sheath 6 encapsulating an inner conducting core 7. As with the high tension cable 1, the core 7 of the cable 5 is made from a bundle of individual wires 8 and again these comprise 32 tinned copper conducting wires of 0.2 mm diameter. However, the depth of the insulating sheath 6 encapsulating the core 7 need not be so great as that for the cable 1 as the earth cable 5 is intended to withstand a high voltage only in exceptional circumstances. Here, the sheath 6 has a depth "b" of 0.65 mm surrounding the core 7 and it is made from the same PVC material as the sheath 2.
A multi-core cable according to the invention suitable for use in supplying an electrical current to a mercury vapour lamp or similar where it will have to withstand an initial voltage of the order of 4,500 volts preferably comprises three cores, as in a standard electrical cable or flex, but with the live and neutral core cables being high tension cores of the kind described above with reference to FIGS. 1 and 1a and the safety earth core cable being of the kind described with reference to FIGS. 2 and 2a. The construction of such a cable will now be described with reference to FIGS. 3 to 6.
In the manufacture of such a three-core cable, the high tension live and neutral cables 9 and 10 respectively and an earth cable 11 are individually manufactured in known manner to the specifications previously described and they are then lightly twisted together as shown in FIG. 3. Preferably, to aid the identification of each of the cables 9, 10 and 11 for wiring purposes, the insulating sheath of each is individually coloured in line with International Standards.
After twisting, the bundle of cables 9, 10, 11 is secured by the application of tape 12, which is wound spirally around the bundle of twisted cables 9, 10, 11. The tape 12 is clear so that the colours of the sheaths of the cables 9, 10 and 11 can be seen if the finished multi-core cable 13, as shown in FIGS. 5 and 6, is cut into. Additionally, the tape 12 is also made from an electrically insulating and heat resisting material.
Finally, the taped and twisted cables 9, 10 and 11 are completely enclosed in known manner in a moulded-on sheath 14 which can be made of a similar PVC compound as that of the individual sheaths comprising the cables 9, 10, 11. The sheath 14 encapsulates the twisted bundle of cables 9, 10, 11 to a depth "c" of at least 1.3 mm and also insulates each of the cables from one another so that the finished structure of the cable 13, as shown in FIG. 6, is solid. The overall diameter "d" of the cable 13 is of the order of 12.5 mm.
Such a multi-core cable 13 is suitable for use in many situations and particularly in lighting installations where a high voltage of up to 4,500 volts has to applied to an electrical device. However, it will be appreciated that many different configurations of cable are possible depending on their intended use. Cables with 1, 2, 3, 5 and more inner high tension inner core cables are all possible and can be manufactured in a similar way to that described above for use in a variety of applications where high voltages must be withstood.

Claims (5)

We claim:
1. A multi-core electrical cable comprising a moulded-on outer sheath, at least two separately insulated inner core cables and a separately insulated earth cable, at least one of the inner core cables has a high tension conducting core with an overall cross-sectional area of at least 1 mm2 and an insulating sheath which is approximately 1.8 mm thick, and wherein said earth cable has a conducting core with an overall cross-sectional area of at least 1 mm2 and an insulating sheath which is approximately 0.65 mm thick.
2. The cable as claimed in claim 1, said high tension conducting core comprises a bundle having at least 32 strands of 0.2 mm diameter tinned copper wire.
3. The cable as claimed in claim 1, said moulded-on outer sheath of the multi-core cable totally encapsulates the inner core cables and said earth cable to a depth of at least 1.3 mm.
4. The cable as claimed in claim 1, said inner core cables and said earth cable are twisted together within said moulded-on outer sheath and bound by a spirally wound tape.
5. The cable as claimed in claim 1 comprising at least two separately insulated high-tension conducting cores.
US07/962,809 1990-06-23 1991-06-14 Electrical cable Expired - Fee Related US5329065A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB909014024A GB9014024D0 (en) 1990-06-23 1990-06-23 An electrical cable
GB9014024 1990-06-23
PCT/GB1991/000956 WO1992000592A1 (en) 1990-06-23 1991-06-14 An electrical cable

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EP (1) EP0536180A1 (en)
CA (1) CA2084644A1 (en)
GB (1) GB9014024D0 (en)
WO (1) WO1992000592A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5834698A (en) * 1995-08-30 1998-11-10 Mitsuba Corporation Composite cable with built-in signal and power cables
US6046665A (en) * 1996-08-22 2000-04-04 Littelfuse, Inc. Fusible link, and link and cable assembly
US6359227B1 (en) 2000-03-07 2002-03-19 Littelfuse, Inc. Fusible link for cable assembly and method of manufacturing same
US6376774B1 (en) 1996-08-22 2002-04-23 Littelfuse Inc. Housing for cable assembly
US6486395B1 (en) * 2000-06-22 2002-11-26 Alflex Corporation Interlocked metal-clad cable
US6495761B1 (en) * 2000-11-13 2002-12-17 Jed Hacker Electrical cable for current transmission, and method of transmitting current therethrough
US6498300B2 (en) * 2001-03-16 2002-12-24 Omega Patents, L.L.C. Electrical signal cable assembly including transparent insulating layers and associated methods
WO2003052770A2 (en) * 2001-12-17 2003-06-26 Wagner-Duchovni Cables And Metals Ltd. Pre-combined electric wiring
US7057113B1 (en) * 2005-06-03 2006-06-06 Chi-Wen Chen Electric wire
US7057112B1 (en) * 2005-06-03 2006-06-06 Chi-Wen Chen Electric wire
WO2007035780A3 (en) * 2005-09-19 2008-01-17 Telefonix Inc Flexible and lightweight seat-to-seat cabin cable system and method of manufacturing same
US20080302554A1 (en) * 2007-06-08 2008-12-11 Southwire Company Armored Cable With Integral Support
US20090250238A1 (en) * 2008-04-08 2009-10-08 Wpfy, Inc. Metal sheathed cable assembly
US20090250239A1 (en) * 2008-04-07 2009-10-08 Wpfy, Inc. Metal sheathed cable assembly
US20100186987A1 (en) * 2009-01-27 2010-07-29 Hal Aitken Aluminum grounding cable for metal and non metal sheathed electrical cables
US7880089B1 (en) 2008-06-13 2011-02-01 Southwire Company Metal-clad cable assembly
CN102263348A (en) * 2011-07-01 2011-11-30 武汉电信器件有限公司 Intensive multi-channel electrical interconnection component
US20120103646A1 (en) * 2010-10-29 2012-05-03 Fox Jamie M Power Cable with Twisted and Untwisted Wires to Reduce Ground Loop Voltages
US20130240237A1 (en) * 2012-03-16 2013-09-19 Wpfy, Inc. Metal sheathed cable assembly with non-linear bonding/grounding conductor
US20130284490A1 (en) * 2012-04-25 2013-10-31 Mark E. Goodson Electrical wiring system and method
US20150155694A1 (en) * 2012-04-25 2015-06-04 Mark E. Goodson Electrical Wiring System and Method
US9093832B2 (en) 2012-04-25 2015-07-28 4G1D Holdco Llc Electrical wiring system and method
US9793049B2 (en) 2012-04-25 2017-10-17 Mjg Innovations, Llc Protected capacitor system and method
US9947467B2 (en) 2012-04-25 2018-04-17 Mjg Innovations, Llc Protected capacitor system and method
US20190074107A1 (en) * 2017-09-05 2019-03-07 Nkt Cables Group A/S Low Voltage Electric Power Cable
US11133121B2 (en) * 2017-04-28 2021-09-28 Sumitomo Wiring Systems, Ltd. Composite cable with inclusion interposed between separator and sheath

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US2286826A (en) * 1940-08-01 1942-06-16 American Steel & Wire Co Portable power cable
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Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5834698A (en) * 1995-08-30 1998-11-10 Mitsuba Corporation Composite cable with built-in signal and power cables
US6046665A (en) * 1996-08-22 2000-04-04 Littelfuse, Inc. Fusible link, and link and cable assembly
US6376774B1 (en) 1996-08-22 2002-04-23 Littelfuse Inc. Housing for cable assembly
US6359227B1 (en) 2000-03-07 2002-03-19 Littelfuse, Inc. Fusible link for cable assembly and method of manufacturing same
US6486395B1 (en) * 2000-06-22 2002-11-26 Alflex Corporation Interlocked metal-clad cable
US6495761B1 (en) * 2000-11-13 2002-12-17 Jed Hacker Electrical cable for current transmission, and method of transmitting current therethrough
WO2004061868A1 (en) * 2000-11-13 2004-07-22 Jed Hacker An electrical cable for current transmission
US6498300B2 (en) * 2001-03-16 2002-12-24 Omega Patents, L.L.C. Electrical signal cable assembly including transparent insulating layers and associated methods
WO2003052770A2 (en) * 2001-12-17 2003-06-26 Wagner-Duchovni Cables And Metals Ltd. Pre-combined electric wiring
WO2003052770A3 (en) * 2001-12-17 2003-10-16 Wagner Duchovni Cables And Met Pre-combined electric wiring
US7057113B1 (en) * 2005-06-03 2006-06-06 Chi-Wen Chen Electric wire
US7057112B1 (en) * 2005-06-03 2006-06-06 Chi-Wen Chen Electric wire
WO2007035780A3 (en) * 2005-09-19 2008-01-17 Telefonix Inc Flexible and lightweight seat-to-seat cabin cable system and method of manufacturing same
US7692099B2 (en) 2005-09-19 2010-04-06 Telefonix, Inc. Flexible and lightweight seat-to-seat cabin cable system and method of manufacturing same
US9396838B2 (en) 2007-06-08 2016-07-19 Southwire Company, Llc Armored cable with integral support
US8697996B2 (en) 2007-06-08 2014-04-15 Southwire Company Armored cable with integral support
US20080302554A1 (en) * 2007-06-08 2008-12-11 Southwire Company Armored Cable With Integral Support
US7754969B2 (en) 2007-06-08 2010-07-13 Southwire Company Armored cable with integral support
US11948707B2 (en) 2007-06-08 2024-04-02 Southwire Company, Llc Armored cable with integral support
US8658900B2 (en) 2008-04-07 2014-02-25 Wpfy, Inc. Metal sheathed cable assembly
US20090250239A1 (en) * 2008-04-07 2009-10-08 Wpfy, Inc. Metal sheathed cable assembly
US8088997B2 (en) * 2008-04-08 2012-01-03 Wpfy, Inc. Metal sheathed cable assembly
US20120073855A1 (en) * 2008-04-08 2012-03-29 Wpfy, Inc. Metal sheathed cable assembly
US8946549B2 (en) * 2008-04-08 2015-02-03 Wpfy, Inc. Metal sheathed cable assembly
US20090250238A1 (en) * 2008-04-08 2009-10-08 Wpfy, Inc. Metal sheathed cable assembly
US7880089B1 (en) 2008-06-13 2011-02-01 Southwire Company Metal-clad cable assembly
US8664532B1 (en) 2008-06-13 2014-03-04 Southwire Company Metal-clad cable assembly
US8124875B2 (en) * 2009-01-27 2012-02-28 Nexans Aluminum grounding cable for metal and non metal sheathed electrical cables
US20100186987A1 (en) * 2009-01-27 2010-07-29 Hal Aitken Aluminum grounding cable for metal and non metal sheathed electrical cables
US8907211B2 (en) * 2010-10-29 2014-12-09 Jamie M. Fox Power cable with twisted and untwisted wires to reduce ground loop voltages
US20120103646A1 (en) * 2010-10-29 2012-05-03 Fox Jamie M Power Cable with Twisted and Untwisted Wires to Reduce Ground Loop Voltages
CN102263348A (en) * 2011-07-01 2011-11-30 武汉电信器件有限公司 Intensive multi-channel electrical interconnection component
US20130240237A1 (en) * 2012-03-16 2013-09-19 Wpfy, Inc. Metal sheathed cable assembly with non-linear bonding/grounding conductor
US9472320B2 (en) * 2012-03-16 2016-10-18 Wpfy, Inc. Metal sheathed cable assembly with non-linear bonding/grounding conductor
US20150155694A1 (en) * 2012-04-25 2015-06-04 Mark E. Goodson Electrical Wiring System and Method
US9093832B2 (en) 2012-04-25 2015-07-28 4G1D Holdco Llc Electrical wiring system and method
US9093831B2 (en) * 2012-04-25 2015-07-28 4Gid Holdco Llc Electrical wiring system and method
US9793049B2 (en) 2012-04-25 2017-10-17 Mjg Innovations, Llc Protected capacitor system and method
US9947467B2 (en) 2012-04-25 2018-04-17 Mjg Innovations, Llc Protected capacitor system and method
US20130284490A1 (en) * 2012-04-25 2013-10-31 Mark E. Goodson Electrical wiring system and method
US11133121B2 (en) * 2017-04-28 2021-09-28 Sumitomo Wiring Systems, Ltd. Composite cable with inclusion interposed between separator and sheath
US20220013254A1 (en) * 2017-04-28 2022-01-13 Sumitomo Wiring Systems, Ltd. Composite cable
US11515063B2 (en) * 2017-04-28 2022-11-29 Sumitomo Wiring Systems, Ltd. Composite cable
US20190074107A1 (en) * 2017-09-05 2019-03-07 Nkt Cables Group A/S Low Voltage Electric Power Cable
US10665365B2 (en) * 2017-09-05 2020-05-26 Nkt Cables Group A/S Low voltage electric power cable

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CA2084644A1 (en) 1991-12-24
AU8082291A (en) 1992-01-23
AU644888B2 (en) 1993-12-23
EP0536180A1 (en) 1993-04-14
WO1992000592A1 (en) 1992-01-09

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